cracking

Apparently David Leigh was able to “hack into voice mail messages” really ? You “hacked” into voice mail messages ?
No you didn’t, stop claiming to have done some thing you didn’t, the term Hacking refers to customising or making a new item from one that one’s not originaly designed for that use.
What David Leigh did was “cracking” which involves breaking things (security etc.)
So let’s look at this fantastic story now; David Leigh rang someones voice mail service entered the default password and was able to gain access to said messages.
It doesn’t sound quite as exciting now does it, which is why it was never told like this.

I’ve always believed that once power was removed from memory (RAM) the data was lost, now Princeton University have demonstrated this to be false.
If you have confidential information in memory when your computer goes to sleep or is even switched off, a would be cracker/thief could access your data.